Oil-burner construction



'- Dc. 11, 1945. CARTER 2,390,509

OIL BURNER CONSTRUCTION Filed Aug. 3, 1940 4 Sheets-Sheet 2 lNVENTORGEORGE I. OIRTER BY Q A ORNEY 1945' G. 1. CARTER 2,390,509

OIL BURNER CONSTRUCTION Filed Aug. 3, 1940 4 Sheets-Sheet 3 ICZRTER -34-BY 2: I

INVENTOR ATTORNEY tion.

become known as the twin.

Patented Dec. 11, 1945 UNITED STATES PATENT OFFICE OIL-BURNERCONSTRUCTION George Irving Carter, Teaneck, N. J assignor to General OilHeating Corporation, West New York, N. J., a corporation of New Jersey IApplication August 3, 1940, Serial No. 350,392

16 Claims.

* Thisinvention relates to oil-burner construc- Oil-burning, as, forinstance, by means of the spray nozzle in domestic installations,includes the factor of economy of space, as well as convenience ofaccess, as, for instance, for adjustment or repair. It is an object ofthe invention to provide a compactly constructed oil-burner in whichparts requirin adjustment are easily and conveniently accessible foradjustment, even while the burner is in active operation, firing thefurnace, and without danger to the adjuster.

An oil-burner construction, commonly used in domestic installations, isthe so-called type. Oil, atomized by means of a nozzle-is burned withair brought into immediate association with the atomized 011. Manydiflerentattempts have been made to obtain proper association of the.atomized oil and the air in order to make combustion as complete aspossible bepass to-the surfaces of the furnace at which the heat is tobe absorbed. One method found successful, especially in furnaces havingsmall combustion chambers, is that in which turbulence in the air forcombustion is induced by causing the air to follow a helical path atleast at the time of its association with the atomized oil to be burned.'It is an object of the invention to provide compact apparatus forproducing turbulence in the flow of air with relation to atomized oil bycausing the air to flow along substantially helical paths relative tothe atomizinsmeans. a

Where an ordinary furnace assembly is located in a domestic heatinginstallation, space is generally at a premium. This generally becomesacute when access both to boiler and to oilburner must be considered. Itis an object of the invention to provide apparatus in which the, 40

extent of the oilburner outside the furnace is reduced so as tofacilitate assembly of the burner with the furnace, as well as access tothe burner for repair or adjustment.

The oil-burner used her to illustrate certain features of the inventionis of a type which'has d-ucts lead to a single blast or fire tube. The

' air-ducts cooperate with the blast tube in such A pair of airmadeeasilyand without necessity for dismantling the installed burner, Or anysubstantial part thereof.

This result may be effected by leading the airducts verticallydownwardly to the blast tube, which may be disposed in a directiontransversely of the extent of the air-ducts, and then mounting the fansfor the air-blower and the motor for driving the fans immediately abovethe blast tube and not in line or in the :same plane with the blasttube. In such an assembly, it is possible to associate these rapidlymoving parts so that vibration will be eliminated substantiallycompletely as'an item in producing noise when the burner is inoperation. For such purpose, resilient mounting of the motor and thefans as well as the oil-pump, to dampen out or absorb such vibrationscompletely within the burner casing, is utilized.

20 Access to the atomizing' nozzle and to the elecforethe hot gasesderived from the burning oil 1 trodes is of material operatingimportance. It is an object of the invention to provide a means forassembly of electrodes and nozzle in an oilburner by which the readyremoval of electrodes 25 and atomizing nozzle may be eflected, as, for

85 burner. It is an object of the invention to mount the transformer sothat, when it is moved into position to make certain of the burner partsaccessible, the transformer is disconnectedautomatically from theelectrodes.

An air-director may be used in conjunction with the blast tube tocontrol the shaping of the flame. It is an object of. the invention toprovide an air-director, adjustable with relation 5 to the oil-spraynozzle and other parts of the and even while the burner is in operation.

within .the blast tube, and elect cyclonic ,ilow

of air past a nozzle which is atomizing the fuel. It is an'obiect of theinvention to arrange ducts and blast tube in such manner that adjust- Itis an object of the invention to mount fans, motor and oil-pump, all ona single shaft, and to support all'from simple bearings associated withthe blower housings.

Other obiects of this invention will be set forth hereinafter, or willbe apparent from the dements, aiter erection of the oil-burner, may beas scrim and the drawings in which-is illustrated the'threaded manyvaried relations without departing from the spirit and scope of theclaimed invention, of which the exemplifying embodiment, herein shownand described, is intended only to be illustrative, butnot to show allthe various forms and modifications in which the invention might beembodied.

n the drawings in which the-same reference characters refer to the ameparts throughout:

Fig. l is an elevationalperspective view of an oil-burner. construction.embodyin the invention;

Fig. 2 is an eievational perspective view of the oil-burner constructionshown in Fig. 1, as seen from the rear or adjusting end of theconstruction, one of the feet being broken away toillustrate details ofthe construction; 7

Fig. 31s a view similar to Fig. 2, the transformer housing being swungto open position, the valve assembly being removed. and the blowercasing covers being shown lifted out of secured position;

Fig. 4 is a perspective view ofthe assembly of sleeve, electrodes andnozzle; 5 r

Fig. 5 is a plan view of the oil-burner construction of Fig. 1, certainof the parts being shown in dotted, ordot-and-dash lines;

Pig. 6 is a vertical cross-sectional view taken transversely of theoilburner construction of Fig. 1, as seen from the line 8-8, certain ofthe parts being shown inelevation, the spider for supportingtheelectmdessndnoazlebeingshownindotand-dash lines: 7

Pig. '7 is a vertical crcss-sect'onal view substantially on the line 1-1of Fig. 8. the ciipump being shown as if the front plate of the housing.were removed, certainof the parts being sbown-in elevation: and Pig. 8is a detail erbs-sectional view blow tially onthe l ne 8-4 ofl'ig. 6,parts of the casingbeingbrcken aminsecticn. In theoil-burner II shownonwings. blast ducts i2 and il leadto a,"gun"-;

dra

.or blast tube it from blower wells is and". Blast tube it duets l2 andIt, and wells itand llmaybedeflnedinaslnglecast ng leg 24 of a Fahspedin maybe tooutside wallfloftheductsanda'flangeextension 14 of theductwalls.

At the enda die; 26 andarms II are screwthreaded openings 38 to receivethreaded bolts 38. These bolts extend into threaded. openings ll in feet42. Lock nuts It may comer-ate with bolts 38,

' 'openinu.andtheieettolock-the feet in any 'podton into which the feetmay be adjusted. Binoe threeof these feet are provided, the level of theapparatus may be adjusted ac-.

l 'iange ll may. have an 'arcuatesectionll to cooperate with acrlindrical flange ll, which forms the rearmost portion of tube 1!. TubeIt, "in its forward aeoti I is a substantially cylindrl'cal member hainl a cylindrical bore '2. Intothisbore.attheforwardsectionofthetube,may

its

' threaded:open ngs in bosses ill-associatedwith be sued air-deflectoru. I'hh air-deflectortahes theformofasleevehavingapassage'lithroughafrusto-conicalsectionltandacylindricalsection".Bectiontlhasasmoothouterwalltoilt substantiailysnuglywithinbore l2.Arodflmay have athreadedendfltmnedupwardlyandsecuredinaholeltinsectiontl. Therodextendsdownwardly'into a passage" formed in a projection II from thecylindrical formation of casting 22 at tube It. A spring 12 encirclesthe rod and'engages against a stop pin ll on the rod,andalsoagainstapartofwailfl. Therodhas a threaded end extended throughan opening It in wall 82, and receives a wing-nut ll. Thus, as thewing-nut is turned, air-deflector It will move with relation to frontend of the blast tube.

-of tube It. Substantial porflons of walls 8 between ports I! and M arefaced to provide a seat 88 for receiving a sleeve ll. Sleeve so includesa cylindrical section 02 having ports It and it formed therein. Theextent of these ports may be substantially the same as the extents ofports 82 and Il. Sleeve it is positioned within seat ll and immediately.in cooperation with ports '2 and II so that ports and I respec-' tivelymay be brought into cooperation with ports 82 and 8 4.

As sleeve II is rotated within seat ll. p rts it and cooperating withports '2 and 84, are

' elective to graduate the amount of opening of ports 82 and i'romamaximumtoaminimum. By rotating the sleeve in the direction indicatedradiallyoftheaxisoftubeiiwillbecovered. It is thus possible to maintainthe character of l2 and I4 intotube II at as tangential, that is,immediatel in inner wall at of the tube. includes a shoulder .8 againstwhich m a the position wit in the tube. In order sleeve within the tube,a removable "y be secured in position against flange suitable securingdevices such as screws I through lugs ill, and engaging a; Sleeve sotasan mamia flange m for reception around a frustro-conical projectionIII III. This interiitting relationship on between flange ill andprojection ll! further functions as a bearing ,for the alone A screw.ill,'enga'ged.in flange lit, may be extended through a slot ill in wallIt! to be accessible at the rear end or the burner. By loosening screwIll, sleeve it may be rotated within'the tube without removing thesleeve or any of the other parts from the assembly, but merely b pushingon the screw. when the sleevehasheeu adjusted into the desired position.acrcw Ill is tightened asainstwall ill'atalot lll,andthesleeveisthus.iixed initsadiusted position. Ducts l2 and it, in addition tohorizontal portions Ill and III, tum upwardly into-vertical sleeve Ilmay abut to'retaln the burner as a unit. At the ou er face of projectionII2, opening yond the center-line of tube I8. and are enlarged intowells. I8 and 28 at substantially equal positions above the center-lineof the tube. Wells I8 and 28 are half sections of blower casings I28 andI28. The other half sections of these blower casings are provided bycovers I88 and I82; The covers are complementary sections, which,together with wells I8 and '28. form casings I28 and I28, whichcooperatewith squirrel-cage fans I84 and I88 at the opposed ends of a shaft I88.The

covers are retained in position by suitable securing means, such asscrews I48 passed through lugs I42 on the covers and lugs I44 onthewells. The fans, driven by suitable means, produce equally effect veblasts through ducts I2 and I4, so that equally efiective blasts willissue past ports 84 and 88 of sleeve 88.

A pair of openings I48 are formed through conical projection H2, andreceive insulators I48 of electrodes I88. Opening I82, formed throughthe center of projection II2, receives oil-tube I84; the coupling oftube I84 in opening I82 maybe produced by any suitable means, as, forinstance, by a threaded connection. At the free end of tube I84, anozzle I88 is positioned. A spider I88, disposed to contact with thewalls of tube I8, may receive tube I84 through a central passage. andthus serve tolocate tube I84 and nozzle I88 centrally of tube I8. Aclamp'I88 may engage a projection I82 at the inner face of conicalprojection H2, and may be shaped for reception over portions ofinsulators I48. Thus. when clamp I88 is tightened by suitable means suchas screws. both electrodes will be locked in position againstseparation, and in the position in wrich they may have been adjustedprior to assemb y in tube I8. Thus electrodes I88 and nozzle I 88 may beadjusted externally of the burner, and then, merely by slidng themthrough the rear opening in flange 48. and by engaging proper screws I84with lugs I88 and bosses I88. t-e entire assembly, including sleeve 88,may be located in I82 receives the end connection of a flexible tube I84which leads to the outlet I88 from oil-pump I88. Oil-pump I88 is mountedand fixed in a casing I18. which, in turn, is fixed to and thusmade'substantially an integral part of casing N2 of motor I14. 'El'ldbearings I18 for shaft I88, which extends between fans I84 and I86 andthrough motor I" and oil-pump I88, are fixedly related to the motor andthe oil-pump by being made substantially integral with casings I18 andI12. A ring I18 of cushioning material has an opening I88 through whicha bearing I18 is received. The outside face of the ring is receivedbetween a pair of straps I82 and I84, forming a clamp I88; the strapsbeing shaped to provide a substantially cylindrical cavity to receivethe ring. One strap I82 may have toes I88 resting upon arms I88 of theother strap I84 and secured thereto by any suitable means such as screwsI82. Arms I88 may extend beyond toes I88 to have rests I84 formed at theends. Rests I84 may be U-shaped in cross-section. Arms I88 bridgeopenings I88 in inner wall I88 of wells I8 and 28. and rest on top edges288 of walls I88, with rests I84 seating over the edges and restrainingclamp I88 against lateral displacement. It is thus made possible, bytaking of! covers I 88 and I82 and disconnecting flexible tube I84 and aflexible tube 282 to-be described, to remove the entiremotor-oil-pump-fan assembly from the apparatu as a unit. Openings I88cooperate with openings 288 in covers I88 and I82 to form air inlets forthe blower casings.

A bracket 284 on wall 82'may provide for connection to the source ofoil. To a threaded open- 5 ing through this bracket, tube 282 will beconnected, although it may be desirable to have tube 282 free. Tube 282is connected to inlet 288 to the oil-pump on casing I18. Within casingI18 is also located pressure relief valve 288 and strainer 2I8, all ofwhich may be of conventional construction, and require no specific.description here. Outlet I88 from the strainer provides a connection forflexible tube I84.

Extending rearwardly from projection III are electrode ends 2, which areformed as contacts. A wall 2I8 may be mounted pivotally on lugs 2"formed on wall 82. This wall may be formed so as to provide an innerchamber 228 within which are positioned terminals 222. These are-theterminals of a transformer 224 which is mounted on the outside face ofwall 2I8. A connection box 228 located on wall 82 provides the necessarycables 228 and 288 for electrical connection to motor "4 and transformer224. Terminals 222 include a pair of spring fingers 282 so located that,when wall2I8 is swung to bring its leg 284 into abutment with wall 82,spring fingers-282 will contact ends 2I4 of the electrodes. Also. whenwall 2| 8 is in this position, access to screw H4 and to wing-nut I8 isprevented, or hindered. Thus. it becomes necessary, in order to make anyadjustments on the burner, to cut off the ignition mechanism of theburner. The adjustments may be made while the burner is in operation.and after ignition has been completed, but not during the first stagesof commencement of a run. After ignition has been effected. wall 2I8 maybe moved clear of the ads justing means and so that ends 2 no longer 40are in contact with terminals 222., Then sleeve 88 or air deflector 84may be adjusted. Wall 2I8 may be retained against wall 82 by engagementof a screw 288 through leg 284 with wall 82.

Many other changes could be ei'fected in. the particular apparatusdesigned. and in methods of operation and use set forth, and, inspecific details thereof, without substantially departing from theinvention intended to be defined in the claims, the specific description.being merely of an exemplifying embodiment in accordance with thestatutes.

What is claimed as new and useful is: V

1. In oil -burner construction, a blast tube having a substantially openfiring-end, the other end 55 of the tube being closed. the tube having alaterally opening port, means communicating with the tube through saidport for producing a flow of air in the tube from the port to the firingend, electrodes supported in the tube and extending from the tubethrough the closed-end. and a transformer mounted on the tube formovement into and out of electrical circuit-making relation to theextending electrodes.

2. In oil-burner construction, a blast tube having an open end in thedirection of movement of the blast therethrough, means for initiating ablast of air, an end wall for closing the other end of the tube, meansassembled with the end wall for directing the initiated blastinto asubstantially cyclonic path from the closed end to the open end of thetube, and means accessible on the outside. face of the endwall foradjusting the directing means.

3. In oil-burner construction. a blast tube havus ing an open end fordirecting the blast from the---i tube into ai'urnace, the other end orthe tube being closed, communicating means forming a jimction with alateral wall of the tube adjacent ing an open end for directing theblast from the tube into a furnace, the other end of the tube beingclosed, communicating means adjacent the closed end and leading into thetube through a lateral wall thereof, means for initiating a blast of airin the communicating means, a sleeve mounted in the tube at the closedend, the sleeve having a port for cooperation with the communicatingmeans to direct the blast into a substantially cyclonic path within. thetube, and means extending through theclosed end for adjusting thesleeve.

5. In oil-bumer construction, a blast tube having an open end fordirecting the blast from the tube into a furnace, the other end of thetube being closed by a wall, a pair of ducts adjacent but forwardl fromthe end wall, the ducts opening into the tube through a lateral wallthereof and extending laterally and upwardly away from ously drivenmeans in the wells for blasts of air in the ducts, and means in the tubebeyond the controlling means for supplying fuel in dispersed iorm.

9. In combination, a pair of blower wells posithe tube to formsubstantially a'u with the tube, v

means for initiating blasts of air in the ducts, the communicationbetween the tube and the ducts including means to discharge theinitiated blasts into substantially interlaced -c yclonic' paths withinthe tube, and means extending but forwardly from the end wall, the ductsopening intothe tube through a lateral wall thereof and extendinglaterally and upwardly away from the tube to form substantially a U withthe tube, and means for initiating blasts of air in the ducts,

- v the communication between the tube, and the ducts including means todischarge the initiated blasts into substantially interlaced cyclonicpaths within the tube.

"I. In combination, a pair of blower-wells posiapairot from the wellsand then towards each other, a tube having means for closing one endthereof, and having ports opening through its lateral walls, the ductshaving communication with the tube through the ports, a sleeve rotatablein the tube for adjusting simultaneously the eiiective opening of theports, the sleeve beingimmediately contiguous to and being capable ofmanipulation through the closed end of the tube, simultaneously drivenmeans in the wells for producing blasts of air in the ducts, and meansin the tube beyond the controlling means for supplying Incl in dispersedform.

10. In oil-burner construction, a blast tube having an .open end and awall closing the other end. electrodes extending into the blast tubetowards the open end from the end wall and projecting outside the blasttube through the end wall, airsupply ducts immediately at the end wallleading away from the lateral walls of the blast tube, means in theblast tube for controlling air-flow from the ducts into the tube, thecontrolling means having manipulating means extending through the endwall, a transformer for the electrodes, the transformer being mounted onthe blast tube to move towards and away from the end wall, and means onthe transformer and the electrode projectionsfor breaking the circuitbetwen transformer and electrodes when the transformer is moved awayfrom the end wall to make the manipulating means accessible.

11. In oil-burner construction, a blast tube awaytrom theendwall,andmeansonthetransformer and the-electrode projections {orbreaking the circuit between transformer and electrodes whenthetransformer is moved away from the .end wall to make theadjusting-movement-eflectingmeansaccesslble.

12. In oil-burner construction, a pair of blower wells positioned inspaced apart relationship and i3. Inoil-burnerconstructiomapeirotblow-'- er wells positioned in spaced'apart.relaticmhip andhavingwallsiacingeachothencoversectiom iceassembly onthe top edges of the walls thewellstoiorm blowercasingaablast duetsleadin downwardly from the wellsconnectedwithandsupportedbytheblssttube.asinsleshaitestendingintobothblower iansontheend soitheshaihamotor ontheshaft between the facing walls, the motor having a,soo,soa

a casing, bearings for the shaft, the bearings ber and supported by theblast tube; a single shaft extending into both wells, ians on the endsof the ahait.'a motor on the shaft; the motor having a casing, anoil-pump for the oil-burner. the shaft extending through the oil-pump,the oilpump being secured against rotation relative to the motor casing,means (or delivering oil irom the oil-pump in mixing relation to the airblast of the blast tube, bearings for the shaft, the bearings beingfixedly related to the casing, thebearings being engaged by the facingwalls of the wells and thereby restrained against rotation.

15. In oil-burner construction, a pair of blower wells positioned inspaced apart relationship and having walls facing each other, a blasttube, ducts leadlngdownwardlyiromthewellsandconnected with and supportedby the blast tube, a single shaft extending into both wells, fans on theends of the shaft, 9. motor on the shaft between the facing walls, acasing for the motor, bearings for the shaft fixedly related to thecasing, and resilient means secured to said racing walls and engagingthe hearings to prevent rotation of the bearings and to cushion thesupport or the bearings on the walls. I

16. In oil-burner construction, a pair 01' blower wells positioned inspaced apart relationship and having walls facing each other, coversections for assembly on the top edges of the walls of the wells toi'orm. blower casings, a blast tube, ducts leading downwardly from thewells and connected with and supported by the blast tube, a single shaitextending into both blower casings, fans on the ends of the shaft, amotor on the shait between the facing walls, the motor having a casing,bearings for the shaft fixedly related to the motor casing, andresilient means secured to the top edges of said facing walls andengaging the hearings to prevent rotation oi the bearings and to cushionthe support of the hearings on the walls.

GEORGE IRVING CAR'IER;

